sorry, a little OTT.
My worse film: David Lynch's "Dune"
Such a terrible visualisation of one of the best SF books ever written. Poorly cast (think Sting!) badly directed. Get Peter Jackson to do it again.
Now I've heard more about what was going on behind the scenes I'm more inclined to give Lynch's Dune a little leeway. He originally wanted to adapt the novel as at least a 2 part epic if not a full trilogy but the studios were dead against that plan. I suspect they saw the soaring costs of Jodorowsky's attempted word for word production before it all collapsed and panicked which led him to the impossible task of adapting it into a single film. I'll agree on the casting, both Sting and Kyle MacLachlan were poor choices.
